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Finding the Fourth Proportional to 12,950.11, 17,874.09 and 9,169.30

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Solution

The fourth proportional to 12,950.11, 17,874.09 and 9,169.30 is: 12,655.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950.11 : 17,874.09 = 9,169.30 : x
  2. Step 2: Convert to fraction form
    12,950.11/17,874.09 = 9,169.30/x
  3. Step 3: Cross multiply
    12,950.11x = 17,874.09 × 9,169.30
  4. Step 4: Simplify right side
    12,950.11x = 163,892,893.44
  5. Step 5: Solve for x
    x = 163,892,893.44/12,950.11
  6. Step 6: Final answer
    x = 12,655.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.